It is a serial connection of two scissor mechanisms to get large transmission ratio.
Brown and grey sliders are immobile.
Transmission ratio of blue lower mechanism: Tb = 2
Transmission ratio of pink upper mechanism: Tp = 5
Total transmission ratio: T = TbTp = 25 = 10
Ttwo scissor mechanisms are connected via green slider pin.
Input: red slider driven by yellow piston.
Violet slider moves ten times faster than the red one.